xSpeed – AI Cache & Performance Optimizer

Your visitors decide to stay or leave in under 3 seconds. xSpeed makes sure they stay.

Most caching plugins bury you in settings, charts, and upgrade popups. xSpeed does the opposite — install it, flip one switch, and your site loads faster. No bloat, no upsells nagging you, no PhD required.

Built by the team at WPDeveloper — trusted by over 7 million WordPress users worldwide.

What Does xSpeed Do?

xSpeed is a full-site performance plugin. It caches your pages, shrinks your code, compresses your files, and serves everything as fast as your server physically can — including an AI-powered audit that tells you exactly what’s slowing your site down.

The result: pages that load in milliseconds, not seconds. Better Google PageSpeed scores. Happier visitors. Better SEO rankings.

The Speed Advantage No Other Free Plugin Offers

When xSpeed caches a page, it doesn’t just save it — it serves it directly from the server, bypassing PHP entirely.

That means:

• With xSpeed static cache: 5–15ms response time
• Without it (PHP-served cache): ~85ms response time

That’s up to 17× faster page delivery on cache hits. No other free caching plugin does this across Apache, nginx, and LiteSpeed automatically.

Features at a Glance

Page Caching

Your pages are saved as static HTML files and served instantly to visitors — before WordPress even loads. The cache rebuilds itself automatically whenever you publish a post, switch themes, or update a plugin. You never have to think about it.

• Static-file rewrite path (bypasses PHP entirely — 5–15ms TTFB)
• Auto-purge on publish, update, comment, theme change
• One-click cache purge from the admin bar
• Exclude specific URLs (e.g. /cart, /checkout, /my-account)
• Set your own cache expiry (1–720 hours)
• Separate mobile cache for phone and tablet visitors
• Per-post cache rules — custom expiry or disable caching for individual posts

Code Minification

Strips all the unnecessary whitespace, comments, and characters from your HTML, CSS, and JavaScript without breaking anything.

• Minify HTML, CSS, and JavaScript
• Combine CSS and JS files to reduce HTTP requests
• Defer or delay JavaScript so it doesn’t block page rendering
• Async CSS loading
• Removes ?ver= query strings from asset URLs
• Safe-minify: automatically skips already-minified files and falls back if anything looks off

GZIP Compression

Makes every file your server sends smaller — so browsers download them faster.

• Auto-configures GZIP on Apache and LiteSpeed
• Shows a ready-to-paste config snippet for nginx and IIS
• Detects if your server already has GZIP active — no double-configuration

Lazy Load

Images, videos, and iframes load only when a visitor scrolls to them — not all at once on page load.

• Lazy load images, iframes, and videos
• Automatic CLS (Cumulative Layout Shift) fix so your layout doesn’t jump

Fonts Optimization

Web fonts are one of the most common causes of slow-loading pages.

• Adds font-display: swap so text is visible immediately while fonts load
• Preloads above-the-fold font files for instant rendering
• Removes the blank-text flash caused by slow Google Fonts responses

Browser Cache

Tells browsers to remember your static files (images, CSS, JS) so returning visitors load your site even faster.

• Sets proper Cache-Control and Expires headers
• Works automatically — no manual configuration needed

Cache Preloader

Warms up your cache automatically so the very first visitor after a purge still gets a fast page.

• Sitemap-driven cache warmer
• Auto-warms cache when you publish or update content

Object Cache (Redis / Memcached)

Speed up database-heavy WordPress installs with server-side object caching.

• Connect Redis or Memcached in seconds
• View status and flush cache from the dashboard

CDN Support

Serve your static files from a CDN for faster global delivery.

• Pull-zone URL rewriting for any CDN provider
• Built-in Cloudflare integration: connect your zone, auto-purge on publish, toggle dev mode

Database Optimization

A bloated database slows down every page load. xSpeed keeps yours clean.

• Optimize database tables
• Remove post revisions, spam, trash, transients, and orphaned meta
• Schedule automatic cleanup so it runs on autopilot

Disable Bloat

Turn off WordPress features you don’t use — each one is a request your server doesn’t have to make.

• Disable dashicons on the frontend
• Remove oEmbed, RSS feeds, XML-RPC, jQuery Migrate, REST API authentication headers

AI-Powered Site Audit (Pro)

xSpeed Pro scans your specific site and tells you exactly which performance features will help the most — with severity ratings and concrete reasons, not generic advice.

Smart Enough to Stay Out of Trouble

xSpeed handles the edge cases other plugins miss:

• Multisite ready — each site in the network gets its own cache and settings.
• LiteSpeed server? — xSpeed detects LiteSpeed Cache’s server module and steps back to avoid conflicts.
• WooCommerce? — logged-in customers and checkout pages are never cached.
• WordPress Site Health — xSpeed adds its own health check under Tools → Site Health so you always know your cache config is working correctly.
• Works on any server — Apache, nginx, LiteSpeed, IIS, and any standard PHP host.

Designed for Everyone

Non-technical users: A 3-step setup wizard walks you through first-time configuration in under 2 minutes. Settings auto-save — there’s no Save button to forget.

Developers: REST API at /wp-json/xspeed/v1/, developer filters (xspeed_skip_minify, xspeed_cache_skip_for_post, xspeed_cache_expiry_for_post), WP_DEBUG awareness, and a React 18 + TypeScript admin UI under 80 KB gzipped.

Agencies: Use the xspeed_branding filter to white-label the dashboard for clients.

Completely Private

xSpeed never collects personal data, stores IP addresses, uses tracking cookies, or contacts any third-party server. Every optimization runs locally on your server. The only external request it makes is a quick check to your own site’s home URL to confirm GZIP is active — and even that is rate-limited to once per hour. (See “External services” below.)

Backed By a Team You Trust

xSpeed is developed by the trusted team at WPDeveloper, a leading WordPress marketplace used and loved by millions of users.

Loved xSpeed?

If xSpeed makes your site faster, please leave a review on WordPress.org — it really helps!

External services

xSpeed contacts exactly one external endpoint, and only your own site:

Self-hosted gzip probe

• What it does: Issues a single GET request to your site’s home URL (home_url('/')) with an Accept-Encoding: gzip header to detect whether your web server is already serving gzipped responses. The response body is discarded; only the Content-Encoding header is read.
• When it runs: On demand when the admin dashboard loads server status, throttled to once per hour via a transient (xspeed_gzip_active).
• Where the request goes: Your own site (home_url()). xSpeed does not contact any third-party server, analytics endpoint, license server, or telemetry collector.
• What is sent: No personal data, no site identifiers, no payload — just a standard HTTP GET from your server back to your server.

Third-party libraries

This plugin bundles the following GPL-compatible third-party libraries:

matthiasmullie/minify

Used for CSS and JavaScript minification.

• Source: https://github.com/matthiasmullie/minify
• License: MIT

matthiasmullie/path-converter

Dependency of matthiasmullie/minify.

• Source: https://github.com/matthiasmullie/path-converter
• License: MIT

React / React DOM / Scheduler

Used for the xSpeed admin interface bundle.

• Source: https://github.com/facebook/react
• License: MIT

lucide-react

Used for admin interface icons.

• Source: https://github.com/lucide-icons/lucide
• License: ISC